Finding the Fourth Proportional to 149,231.19, 205,937.81 and 81,248.03
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Solution
The fourth proportional to 149,231.19, 205,937.81 and 81,248.03 is: 112,121.60
Step by Step Solution
- Step 1: Write the proportion equation
149,231.19 : 205,937.81 = 81,248.03 : x - Step 2: Convert to fraction form
149,231.19/205,937.81 = 81,248.03/x - Step 3: Cross multiply
149,231.19x = 205,937.81 × 81,248.03 - Step 4: Simplify right side
149,231.19x = 16,732,039,929.09 - Step 5: Solve for x
x = 16,732,039,929.09/149,231.19 - Step 6: Final answer
x = 112,121.60
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.